WSM Piston Kit - Yamaha - Standard 50-530PK Stella Phenom Leather Air Gloves which is integrated into the

which is integrated into the fabric to combat odors

Rear sprockets also feature a special tooth profile that allows the chain to roll easily on and off the sprocket for longer wear

Fully body-mapped with strategically positioned open mesh inserts for ventilation

Three-stage heat treatment for the highest available strength

WSM Piston Kit - Yamaha - Standard 50-530PK Stella Phenom Leather Air Gloves which is integrated into theQuality and construction that meets or exceeds OEM Feature improved E clip design Contain piston, rings, pin and clips Additional rings available separately Order one per cylinder Skirts have a nonabrasive, expansion retarding MOS2 coating to reduce heat and friction for added power and longevity MOS2 coating actually draws heat through piston walls and out the bottom Specially hardened tops add strength to ring grooves